Haulage apparatus



Filed Mayl6, 1925 5 Sheets-Sheet gwuenliov abkozmq April 1930 o. E.CLARK 1,752,333

' HAULAGE APPARATUS gwwntoc Omarlf Clark April 1, 1930. o. E. CLARK1,752,333

HAULAGE APPARATUS Filed May 16. 1925 5 Sheets-Sheet 3 amarl'. ClarkApril 1, 1930. o. E. CLARK HAULAGE APPARATUS 5 Sheets-Sheet 4 Filed May16. 1925 OmarL'. Clark attain/0g April 1, 1930. o. E. CLARK HAULAGEAPPARATUS Filed May 16. 1925 5 Sheets-Sheet 5 Zlwuentoc OmarE L'MrkPatented Apr. 1, 1930 UNITED STATES PATENT; OFFICE om r. CLARK, ornnnvna, coLonAno,

ASSIGNOR, IBY MESNE ASSIGNMENTS, TO

THE GARDNER-DENVER COMPANY, OF QUINCY, ILLINOIS, A CORPORATION OFDELAWARE Application filed May 16,

- drum type that can'be readi ytransported,

and yet is sufliciently powerful to perform many haulage operations, asfor example,

the dra ging of scrapers or scoops between a point 0 loading and a pointof delivery, the hoistin of heavy articles, and various operations 0 asimilar character.

The preferred embodiment of the invention is illustrated in theaccompanying drawings, wherein Figure 1 is a side elevation of a form ofconstruction that is at present preferred,

Figure 2 is a top plan view,

Figure 3 is a sectional view taken on the line 33 of Figure 2,

Figure 4 is a sectlonal view taken on the line 44 of Figure 2,

Figure 5 is a detail sectional view of the clutch mechanism,

Figure 6 is a plan view of one of the clutch operating plunger heads.

In the embodiment disclosed, a base 8 is rovided, at one end of whichare mounted rackets 9 formed with journal boxes 10. A

tubular shaft 11 has its ends journaled in said boxes, roller bearings12 being preferably provided therefor.

Journaled on the tubular shaft and arranged end to end are winding drums13 that are preferably duplicates in form, but arranged in reversedrelation, the inner heads 14 being relatively plain in character, theouter heads 15 having outstanding annular flanges 16. The drums 13preferably have bearing bushings 17, forming the inner walls of oilchambers 18 that are accessible for filling through openings closed byplugs 19. The bushings 17 have suitable ports 20, affording access tooil grooves 21, formed in the inner sides of the bushings, and thusdistributing lubricant upon the portions of the shaft 11 on which thedrums arejournaled.

Between the inner heads 14 of the drums 13 and surrounding the tubulardriving.shaft 11 is a gear case 22, the lower portion of which 5 may bein'the form of an oil well 23 that can HAULAGE APPARATUS 1925. Serialin). 30,729.

be filled from the top through an opening closed by a detachable plug24. Located in this gear case 22 and keyed or otherwise fixedly securedto the tubular shaft 11 is a worm gear wheel 25 that is thus locatedbetween the adjacent heads 14 of the drums 13. The base 8 is extended toone side of the drums and, as clearly shown in Figure 1, forms aplatform 26, and on this platform is mounted a motor 27 that may be ofany desired character, but is preferably a suitable electric motor. Byreferring to Figures 1 and 5, it will be noted that this motor isinclined downwardly and inwardly, and that its axis is disposedtransversely to the driving shaft 11 and tangentially to the gear wheel25. A motorshaft 28, having a flexible coupling 29 with the rotor of themotor, extends into the lower end 23 of the gear case 22, and carrieswithin said gear case a worm 30 that is in mesh with the lower side ofthe worm gear 25. It will thus be evident that when the motor is inoperation the tubular driving shaft 11 will be continuously rotated inone direction. I

The outstanding flanges 16 of the outer heads 15 of the drums 13 coactwith the brackets 9 to form housings and in these housings are clutchesfor connecting the respective drums 13 to the driving shaft 11. Theseclutch mechanisms are duplicates and their structure, it is thought,will be clear by reference particularly to Figure 5. Secured to thedriving shaft 11, within each of the flanges 16, is a head 31, this headpreferabl having a split ring 32 surrounding the sha 11 and compressedthereupon by tension bolts 33 and being also keyed to the shaft, asshown at 34. An expansible split clutch ring 35, having a friction band36 on its exterior, has its central portion mounted on a bracket 37slotted, as shown at 38, to slidably receive the outer end 39 of thehead 31. Other brackets 40 are secured to the ends of the ring andpivotally mounted on these latter brackets are extensible toggle links41, pivoted together as shown at 42 and having a link connection 43 witha bell crank 44 that is pivotally mounted on one of the tension bolts33, as shown in Figure 4. Coiled-springs 45 100 reciprocate within t etubular shaft 11 and consists of terminal heads 46 connected by atubular member 47. These heads have transverse slots 48 through them, inwhich are engaged the rounded inner ends 49 of the bell cranks 44, theends of the tubular shaft 11 being also slotted as shown at 50, topermit the passage of said ends of the bell cranks. The outer ends ofthe plunger heads 46 have sockets 51. In one of these sockets isdetachably secured by a universal ball mounting 52,- the inner end ofa'link 53 that is pivoted to an actuating lever 54. The lever 54 isfulcrumed on a bracket 55 detachably bolted, as shown at 56, to one sideof the base. By swinging the lever 54, it will be evident that theplunger 46-47 can be reciprocated within the tubular shaft 11.

The outer faces of the flanges 16 of the drums constitute brakingsurfaces engaged by brake bands 57, which can be operated by suitablemanually operated heads 58 adjustably mounted on stems 59.

With this construction, it will be understood that-the motor alwaysrotates in one direction and consequently the driving shaft 11 is alwaysrotated in one direction. A haulage cable may be mounted on one of thedrums 13 and a tail or return cable on the other, the two cables beingcorrespondingly wrapped on their respective drums. When one of the drumsis to be driven the actuating lever 54 is moved in one direction,thereby allowing one of the bell cranks 44 to swing upwardly and on theother hand positively swinging the other bell crank downwardly. Thelatter bell crank therefore pulls the toggle links 41, connected theretoinwardly,

straightening the toggle and causing the ex-' pansion of the clutch ring3536, to which the toggle is attached. This expansion causes thefriction, band 36 to engage the inner face of the flange 16 of one drum,thereby clutching said drum to the shaft and causing its rotation. Inthis clutching action it has been found that the particular arrangementof the toggle is advantageous for when it. is pulled inwardly, it has atendency not only to expand the ends of the ring, but to force thecentral portionof the ring downwardly and therefore outwardly, causing avery complete expansion of said ring and its clutching action at allpoints. The amount of movement of the toggle can be varied bylengthening or shortening the toggle links. For instance it may bepermitted to have a movement to bring the links into alignment,

or slightly past dead center so as to cause the automatic locking of theclutch. When one drum is thus clutched to the shaft, it will be obviousthat the other will be free. Therefore, for example, if a haulage cableis bein wrapped upon the driven drum and a tail cable is on the otherdrum, the tail cable can pay off freely. When the lever is thrown intothe opposite direction the drum that was formerly free becomes clutchedto the driving shaft, while the former driven shaft is freed.

1 It will be clear from the drawings that the structure is a peculiarlycompact arrangement, and the mechanism is exceedingly simple with adirect drive. It will be noted moreover that all the moving parts arecarefully housed and thus protected against the entrance of injuriousmaterials. As these haulage mechanisms or hoists are often used m of theapparatus, it only being necessary to.

detach the bracket 55 and bolt it to the opposite side'of the base, boltholes 56 being provided for the purpose. The connection between the link53 and the plunger is also readily removable from one of the plungerheads and can be readily engaged in and secured to the other head, theunused head preferably having a detachable closure plug 52 in the socket51.

From the foregoing it. is thought that the construction, operation andmany advantages ,of the'herein described invention will be apparent tothose skilled in the art, without further description, and it will beunderstood that various changes in the size, shape, proportion and minordetails of construction, may be resorted to without departing from thespirit or sacrificing any of the advantages of the invention.

What I-claim, is

1. In a hoist, the combination with a support, of a drivingshaftjournaled thereon, drums journaled to rotate about the shaft, clutchmechanism for connecting the drums to and disconnecting them from theshaft, a clutch moving plunger longitudinally reciprocable within thedriving shaft, and con- .nected to the clutch mechanism, an actuatinglever, means for mounting the lever on the support at either end of'theshaft, and means for connecting the lever when so mounted to theadjacent end of the plunger. I

2. In a hoist, the combination with a recessed base, of a shaftjournaled on the base above the recess thereof, drums journaled on theshaft, a gear wheel fixed to the shaft between the drums, a gear casebetween the drums enclosing the gear and including a bottom portionseated in the recess of the base and forming an oil well, a motor on thebase, and a shaft driven by the motor and in gear with the gear wheelbelow the same in the oil well.

3. In a hoist, the combination with a base having spaced recesses, of ashaft journaled on the base above one of the recesses thereof, drumsjournaled on the shaft, a gear wheel fixed to the shaft between thedrums, a gear case between the drums enclosing the gear and including abottom portion seated in one of the recesses of the base and forming anoil well, a motor on the base and having its lower portion extendinginto the other recess of the base, and a downwardly inclined shaftdriven by the motor and in gear with the gear wheel below the same inthe oil well.

In testimony whereof I aflix my signature.

OMAR E. CLARK.

